I have a pair of CBM-170SE for my back surrounds in a 5.1 system, one of which was not used for several years because I suspected that a mouse got into it through the sound port in back. Now, when I play test signal (white noise) it sounds very different from the other.

The "good" one sounds very similar to the Sierra-1 pair in front, but that possibly-damaged 170 only reproduces the higher pitched noise.

If it was a mouse, I'm thinking maybe he cut a wire leading to the woofer and left the tweeter alone.

Two questions: is there a way for me to look inside and see if my theory is correct? If not, roughly how much would it cost for AA to check and fix the wiring?

Thanks!